X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/01590b11dce299da1d20ced3561bc78786dacac7..9811f65b56e9bdb15722179e59c722de6713ffa2:/tasklib/task.py

diff --git a/tasklib/task.py b/tasklib/task.py
index 65679dc..491a374 100644
--- a/tasklib/task.py
+++ b/tasklib/task.py
@@ -159,6 +159,10 @@ class TaskFilter(object):
 
     def add_filter_param(self, key, value):
         key = key.replace('__', '.')
+
+        # Replace the value with empty string, since that is the
+        # convention in TW for empty values
+        value = value if value is not None else ''
         self.filter_params.append('{0}:{1}'.format(key, value))
 
     def get_filter_params(self):